If you asked the average person what a refuse lorry was made of, the chances are that they wouldn’t say “stainless steel”. Yet, this is precisely what Dennis Eagle use for the cab of their state of the art refuse vehicles.
The specific grade used for this application is 1.4003. This is often described as a “utility stainless steel”. It is a 10.5% chromium ferritic grade. This is the minimum amount of chromium that qualifies the steel to be classified as a stainless steel in the EN standard system. Coupled with a good paint system, this grade provides a robust and cost effective solution.
Although its basic structure is ferritic, the constituent elements are balanced in such a way as to produce a low carbon martensitic structure in the heat affected zone of the weld. This provides toughness and therefore good crash resistance.